3Com Megahertz 56K Cellular Modem PC Card Model 3CXM556

3Com Megahertz 3CXM656 56K Global GSM WinModem PC Card + Install Software - NOS

3Com Megahertz 56K Cellular Modem PC Card Model 3CXM556 & Encore 11 MBPS PC CARD

3Com 3CXM056-BNW 56K Modem PC Card PCMCIA - Xjack Connector - Vintage Untested

USR Megahertz 56K Modem XJACK PC Card PCMCIA XJ1560

Vintage Megahertz XJ2288 PCMCIA Modem 28.8 14.4K XJACK PC Card Retro Laptop

Diamond Supra Express 56K Modem Card & Speakerphone - New Sealed

3Com Megahertz PCMCIA 56k Cellular Modem PC Card 3CCM556